@SuppressWarnings("unchecked")
private void setFilter(WebMapServer wms, GetMapRequest request) {
Filter mapFilter = null;
Map<ILayer, Filter> filters = new HashMap<ILayer, Filter>();
List<ILayer> layers = getContext().getLayers();
for (ILayer layer : layers) {
Object layerFilter =
layer.getStyleBlackboard().get(ProjectBlackboardConstants.LAYER__DATA_QUERY);
Filter filter;
if (layerFilter instanceof Query) {
filter = (Filter) ((Query) layerFilter).getFilter();
} else if (layerFilter instanceof Filter) {
filter = (Filter) layerFilter;
} else {
filter = mapFilter;
}
if (filter != null && filter != Filter.INCLUDE) {
filters.put(layer, filter);
}
}
if (filters.isEmpty()) return;
StringBuilder builder = new StringBuilder();
HashMap hashMap = new HashMap();
for (Map.Entry<ILayer, Filter> entry : filters.entrySet()) {
if (entry.getValue() == null) builder.append('(');
try {
StringWriter writer = new StringWriter();
DocumentWriter.writeDocument(entry.getValue(), FilterSchema.getInstance(), writer, hashMap);
builder.append(writer.toString());
} catch (OperationNotSupportedException e) {
WMSPlugin.log(
"Error writing filter for layer: " + entry.getKey().getID(), e); // $NON-NLS-1$
builder.append("<Filter/>"); // $NON-NLS-1$
} catch (IOException e) {
// SHOULDN'T Happen I don't think...
assert false;
WMSPlugin.log(
"Error writing filter for layer: " + entry.getKey().getID(), e); // $NON-NLS-1$
builder.append("<Filter/>"); // $NON-NLS-1$
}
builder.append(')');
}
try {
String encode = URLEncoder.encode(builder.toString(), "UTF-8"); // $NON-NLS-1$
request.setVendorSpecificParameter("filter", encode); // $NON-NLS-1$
} catch (UnsupportedEncodingException e) {
// better not happen!
throw (RuntimeException) new RuntimeException().initCause(e);
}
}
